The International Atomic Energy Agency and its Director General, Mohamed EIBaradei, have been awarded the 2005 Nobel Peace Prize.
The award was made at a ceremony in Oslo this afternoon.
The agency was honoured for its efforts to prevent nuclear energy from being used for military purposes.
Dr ElBaradei delivered a peace lecture in the city hall immediately afterwards.
He said the world should work to make nuclear weapons as universally condemned as slavery or genocide.
The head of the UN nuclear watchdog added that the world faced 'threats without borders' that could not be tackled by building walls, developing bigger weapons or dispatching troops, but only through multilateral co-operation.
Those threats are weapons of mass destruction, terrorism, organised crime, armed conflict, poverty, infectious disease and environmental degradation, Mr ElBaradei said.
